Carrier Traits Often Missing From Health Records
Mayo Clinic's genetic study suggests clearer guidance is needed to flag sickle cell and beta-thalassemia carriers before pregnancy.
Updated on Nov. 2, 2026 in Life Sciences
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Mayo Clinic researchers identified carrier traits for sickle cell anemia and beta-thalassemia at clinically significant levels using genetic data from nearly 50,000 participants, published in Mayo Clinic Proceedings. The research is published study findings rather than a commercially available test or clinical guideline.
Why it matters
The study found that genetic carrier findings often did not match diagnosis codes in electronic health records, with only 19 of 116 sickle cell trait carriers and 47 of 98 beta-thalassemia carriers having a corresponding code. The gap points to a need for clearer guidance on identifying hemoglobinopathy carrier status, since all U.S. states screen newborns but practices for beta-thalassemia reporting have varied.
The analysis compared genetic variant data from nearly 50,000 participants against diagnosis codes in electronic health records drawn from the Tapestry initiative, which enrolled more than 98,000 people between July 2020 and May 2024. Only a minority of genetically identified carriers carried a matching code, and the authors say the reasons for the discrepancies remain to be studied.
The players
Mayo Clinic
A large academic medical center and research institution whose Tapestry initiative and Precure Research program generate genetic and clinical data at scale.
The details
Researchers scanned genetic data from nearly 50,000 participants for variants linked to sickle cell trait and beta-thalassemia trait, which are inherited conditions where a person carries one altered copy of a gene and usually has no symptoms. They then checked those genetic results against the diagnosis codes recorded in each participant's electronic health record, the standardized digital chart used by clinicians. Where the two sources disagreed, the genetic result showed a carrier status that the chart did not record, a gap that matters most for people with beta-thalassemia, a group of blood disorders affecting hemoglobin, the oxygen-carrying protein in red blood cells.
Timeline
Tapestry enrolled more than 98,000 participants at Mayo Clinic between July 2020 and May 2024.
The study findings were published and reported on November 2, 2026.
The Tech Race
Large health systems with linked genetic and electronic record data, such as Mayo Clinic's Tapestry initiative, are positioned to measure how accurately routine records capture inherited traits. This study adds a field-level data point on the reliability of diagnosis codes as a proxy for genetic carrier status.
Adults who were born before comparable newborn screening existed may not know they carry these traits, and the authors suggest primary care clinicians may be well placed to identify people who could benefit from testing before pregnancy. The study does not establish a new testing standard, and no availability or timeline for changed clinical guidance was announced.
The takeaway
Clinicians and patients should expect that genetic carrier status may not appear in standard diagnosis codes, so the authors' call for clearer identification guidance is the trend to watch. Follow future publications from the Tapestry cohort for research addressing the mismatches the study reported.
Further reading
Explore more in Life Sciences for the broader research context behind inherited blood disorders and genetic screening.
More information
Learn more about the Mayo Clinic Precure Research initiative on the institution's research site.
Source note: This article includes information reported by Technology Networks.
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